HP-27: Difference between revisions
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[[File:27new.jpg|thumb|A HP 27]] |
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{{Orphan|date=October 2008}} |
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The '''HP-27''' was a hand-held scientific and financial, but not programmable, calculator made by [[Hewlett-Packard]] between 1976 and 1978. |
The '''HP-27''' was a hand-held scientific and financial, but not programmable, calculator made by [[Hewlett-Packard]] between 1976 and 1978. |
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Unlike all previous HP's pocket calculators, the HP-27 could do mathematic, statistic and business operations. It used [[Reverse Polish Notation]] (RPN) for calculations, working on a four-level [[Stack (abstract data type)|stack]] (x,y,z,t). Nearly all keys had two alternate functions, accessed by a yellow and black prefix key. So despite the 30 keys only keyboard it could access about 68 functions. The HP-27 also had a 10-digit red [[LED]] display and 10 registers to store numbers. |
Unlike all previous HP's pocket calculators, the HP-27 could do mathematic, statistic and business operations. It used [[Reverse Polish Notation]] (RPN) for calculations, working on a four-level [[Stack (abstract data type)|stack]] (x,y,z,t). Nearly all keys had two alternate functions, accessed by a yellow and black prefix key. So despite the 30 keys only keyboard it could access about 68 functions. The HP-27 also had a 10-digit red [[LED]] display and 10 registers to store numbers. |
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==See also== |
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* [[List of Hewlett-Packard products#Pocket calculators|List of Hewlett-Packard products: Pocket calculators]] |
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* [[HP calculators]] |
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==External links== |
==External links== |
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*[http://www.hpmuseum.org/hp27.htm The Museum of HP Calculators' article on the HP-27] |
*[http://www.hpmuseum.org/hp27.htm The Museum of HP Calculators' article on the HP-27] |
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*[http://mycalcdb.free.fr/main.php?l=0&id=782 HP-27] pictures on [http://mycalcdb.free.fr MyCalcDB] (database about 70's and 80's pocket calculators) |
*[http://mycalcdb.free.fr/main.php?l=0&id=782 HP-27] pictures on [http://mycalcdb.free.fr MyCalcDB] (database about 70's and 80's pocket calculators) |
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{{HP Calculators}} |
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[[Category:HP calculators|27]] |
[[Category:HP calculators|27]] |
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Revision as of 20:33, 6 April 2014
The HP-27 was a hand-held scientific and financial, but not programmable, calculator made by Hewlett-Packard between 1976 and 1978.
Unlike all previous HP's pocket calculators, the HP-27 could do mathematic, statistic and business operations. It used Reverse Polish Notation (RPN) for calculations, working on a four-level stack (x,y,z,t). Nearly all keys had two alternate functions, accessed by a yellow and black prefix key. So despite the 30 keys only keyboard it could access about 68 functions. The HP-27 also had a 10-digit red LED display and 10 registers to store numbers.
See also
External links
- The Museum of HP Calculators' article on the HP-27
- HP-27 pictures on MyCalcDB (database about 70's and 80's pocket calculators)